Manufacturing method of composite glue injection profile
By injecting heat-insulating glue into the injection groove of the composite glue-injection profile and using the shrinkage stress during cooling forming, or presetting the deformation margin of the profile before injection, the problem of deformation of the composite glue-injection profile is solved, and the profile with an ideal angle is achieved, meeting the need to improve the insulation effect.
Patent Information
- Application Number
- CN202510169146.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-14
- Publication Date
- 2025-04-18
Smart Images
Figure CN119840081A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of door and window profiles, and in particular to a method for manufacturing a composite glue-injected profile. Background Art
[0002] As people pursue a better life, their attention to doors and windows is no longer limited to their firmness, but also puts forward higher and higher requirements for thermal insulation. For example, in summer, when the air conditioner is turned on indoors, the indoor cold air should not be transferred to the outside as much as possible, and the outdoor hot air should not be transferred to the indoors as much as possible; similarly, in winter, when the heating is turned on indoors, the indoor heating should not be transferred to the outside as much as possible, and the outdoor cold air should not be transferred to the indoors as much as possible. In this way, the market began to appear in composite injection profiles, that is, the profiles used to manufacture door frames and window frames are injected with thermal insulation glue to meet the needs of indoor and outdoor thermal insulation. However, as the requirements for thermal insulation increase, technicians have found that it may be necessary to consider increasing the volume of the injection groove or using multiple injection grooves to inject more thermal insulation glue. However, whether the volume of the injection groove is increased or multiple injection grooves are used, the problem of profile deformation is very likely to occur after the injection is completed (there is generally no deformation problem when there are few or small injection grooves). In this way, the manufactured composite injection profiles cannot meet the requirements. Summary of the invention
[0003] The purpose of the present application is to provide a method for manufacturing a composite injection-molded profile, which can ensure that the composite injection-molded profile does not deform and meets the requirements.
[0004] To achieve the above-mentioned purpose, the present application provides a method for manufacturing a composite glue-injected profile, the manufacturing method comprising:
[0005] Step 1, providing a profile, wherein the profile has a glue injection groove, wherein the glue injection groove has a first wall and a second wall connected to each other, and a first angle is formed between the first wall and the second wall;
[0006] Step 2: injecting glue, injecting heat-insulating glue into the glue injection groove, cooling the heat-insulating glue to form, and shrinking the heat-insulating glue to drive the profile to deform, so that a second angle is formed between the first wall and the second wall, and the second angle is smaller than the first angle;
[0007] Among them, the second angle is the ideal angle required by the composite injection-molded profile, the first angle is preset to be greater than the ideal angle required by the composite injection-molded profile, and during the step two, the balance relationship between the shrinkage stress generated by the cooling and molding of the thermal insulation glue and the anti-deformation force of the profile, the second angle formed during the final molding is the ideal angle required by the composite injection-molded profile; or, the first angle is the ideal angle required by the composite injection-molded profile, and the manufacturing method also includes: step three, shaping, shaping the profile to make the profile deform in the opposite direction, so that the first wall and the second wall are restored to the first angle.
[0008] In one embodiment, the number of the glue injection grooves is greater than or equal to 1, each of the glue injection grooves is provided with a glue injection port, and the thermal insulation glue is injected into the glue injection groove from the glue injection port; each of the glue injection grooves is provided with a temporary bridge at the bottom relative to the glue injection port, and the manufacturing method further includes: step four, cutting the bridge, and each of the temporary bridges of the glue injection grooves is cut off after the thermal insulation glue is formed.
[0009] In one embodiment, the positions of the glue injection ports on the glue injection grooves are consistent.
[0010] In one embodiment, the positions of the glue injection ports on adjacent glue injection grooves are opposite to each other.
[0011] In one embodiment, in the step 2, glue is injected into each of the glue injection grooves simultaneously.
[0012] In one embodiment, in the step 2, glue is injected into each of the glue injection grooves one by one in sequence.
[0013] In one embodiment, in the step 4, bridges are cut for each of the glue injection grooves simultaneously.
[0014] In one embodiment, in the step 4, the bridges of the glue injection grooves are cut one by one in sequence; or, the glue injection grooves are injected with glue and the bridges are cut one by one in sequence.
[0015] In one embodiment, when the second angle is an ideal angle required for the composite injection molding profile, the profile itself has the first angle when it is manufactured.
[0016] In one embodiment, when the second angle is an ideal angle required by the composite injection molding profile, the profile itself also has the second angle when manufactured. Before performing the step 2, the manufacturing method further includes:
[0017] Step five: pre-shaping: pre-shaping the profile to form the first angle between the first wall and the second wall.
[0018] In summary, the beneficial effects of this application are:
[0019] The manufacturing method of the composite injection-molded profile of the present application is to restore the profile to its original shape through a shaping step after the profile is deformed by injection-molding, or to allow the profile to have a corresponding margin for subsequent deformation and shrinkage before injection-molding, so that when the thermal insulation glue is cooled and formed after injection-molding, the thermal insulation glue drives the profile to deform together and directly deform to the desired shape. In this way, it can be ensured that the manufactured composite injection-molded profile does not deform, has an ideal angle, and meets the requirements. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.
[0021] Figure 1 A schematic diagram of the shape of the profile involved in the manufacturing method of the composite injection-molded profile of the present application before injection of glue;
[0022] Figure 2 A schematic diagram of the shape of the profile involved in the manufacturing method of the composite injection-molded profile of the present application after injection of glue;
[0023] Figure 3 The profile involved in the manufacturing method of the composite injection-molded profile of the present application is preset as a schematic diagram of a shape with a margin for subsequent deformation and shrinkage. DETAILED DESCRIPTION
[0024] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present application. In addition, it should be understood that the specific implementation methods described herein are only used to illustrate and explain the present application, and are not used to limit the present application.
[0025] Please refer to Figure 1 , Figure 2 As shown, during the manufacturing process of the composite injection molding profile, after the thermal insulation glue is injected into the injection groove of the profile ( Figure 2 The black object is the thermal insulation glue. Figure 1The blank space corresponding to this is the glue injection groove). When the thermal insulation glue is cooled and formed, the thermal insulation glue will shrink. After being injected into the glue injection groove, the thermal insulation glue will adhere to each wall of the glue injection groove. Therefore, when the thermal insulation glue shrinks during the cooling and forming process, it will also cause the walls of the glue injection groove to shrink, thereby causing the entire profile to deform. Because the deformation is not easy to see with the naked eye, in order to show it more vividly, Figure 1 The dotted rectangular frame is used to represent the outer contour of the profile before injection (generally, most profiles include multiple walls that are roughly vertical, so the overall outer contour gives people a rectangular visual impression). Figure 2 The trapezoidal dotted line frame represents the outer contour of the profile after injection, and the difference between the trapezoidal dotted line frame and the rectangular dotted line frame is the deformation. This deformation will have an adverse effect on the subsequent installation and use of the composite injection profile on doors and windows, so this application proposes a solution to this problem as follows.
[0026] The present application provides a method for manufacturing a composite glue injection profile, the manufacturing method comprising:
[0027] Step 1, providing a profile, wherein the profile has a glue injection groove, wherein the glue injection groove has a first wall and a second wall connected to each other, and a first angle is formed between the first wall and the second wall;
[0028] Step 2: injecting glue, injecting heat-insulating glue into the glue injection groove, cooling the heat-insulating glue to form, and shrinking the heat-insulating glue to drive the profile to deform, so that a second angle is formed between the first wall and the second wall, and the second angle is smaller than the first angle;
[0029] Among them, the second angle is the ideal angle required by the composite injection-molded profile, the first angle is preset to be greater than the ideal angle required by the composite injection-molded profile, and during the step two, the balance relationship between the shrinkage stress generated by the cooling and molding of the thermal insulation glue and the anti-deformation force of the profile, the second angle formed during the final molding is the ideal angle required by the composite injection-molded profile; or, the first angle is the ideal angle required by the composite injection-molded profile, and the manufacturing method also includes: step three, shaping, shaping the profile to make the profile deform in the opposite direction, so that the first wall and the second wall are restored to the first angle.
[0030] In short, this application provides two methods: one is to restore the profile to its original shape through a shaping step after the profile is deformed by injection; the other is to allow the profile to have a corresponding margin for subsequent deformation and shrinkage before injection. Figure 3 , Figure 1 As shown, Figure 3 The inverted trapezoidal dotted box is relative to Figure 1The difference in the dotted rectangular box is the margin. In this way, when the thermal insulation glue is cooled and formed after injection, the thermal insulation glue drives the profile to deform together and directly deform to the desired shape. Among them, the shaping step can be made with the help of existing shaping equipment, with slight improvement and adjustment or design of corresponding fixtures to correspond to the specific composite injection profile product involved in this application. The following will describe other details of the scheme in more detail.
[0031] First, this application does not limit the number of injection slots. Figure 1 , Figure 2 , Figure 3 In the example, two glue injection grooves are used, but in fact, the profile may have one glue injection groove, or two, three or even more glue injection grooves. As long as the profile is deformed after the thermal insulation glue is injected into the glue injection groove of the profile, the solution of this application can be used to solve the problem of profile deformation. Therefore, the number of glue injection grooves described in this application is greater than or equal to 1. Of course, generally speaking, the more glue injection grooves there are or the larger the volume of the glue injection groove, the more thermal insulation glue is injected, the greater the shrinkage force generated by the cooling and molding of the thermal insulation glue, and the more obvious the deformation of the profile.
[0032] In addition, each of the injection grooves is provided with an injection port, and the thermal insulation glue is injected into the injection groove from the injection port; each of the injection grooves is provided with a temporary bridge at the bottom relative to each of the injection ports, and the manufacturing method further includes: step 4, cutting the bridge, and each of the temporary bridges of each of the injection grooves is cut off after the thermal insulation glue is formed. Figure 1 , Figure 2 , Figure 3 As shown, the left and right directions in the drawing correspond to the inside and outside directions of the doors and windows that will be installed with the profile later. After the temporary bridge is cut off, the various parts of the metal profile are not directly connected in the inside and outside directions of the doors and windows, but are connected through the thermal insulation glue in the middle, which reduces heat transfer, improves the thermal insulation effect, and meets the thermal insulation requirements.
[0033] There are usually multiple walls on the profile, and these multiple walls are generally distributed horizontally and vertically, that is, the two connected walls are generally arranged perpendicular to each other. In the present application, the aforementioned first wall can be the wall where the temporary bridge is located; and the second wall can be any of the two walls connected to the first wall. In the present application, the wall connected to the left end of the first wall in the figure is taken as the second wall as an example. Moreover, in order to facilitate understanding and simplify description, the examples in this application all take the angle between the first wall and the second wall as 90 degrees as the ideal angle (the outer contour is also like Figure 1Rectangular shape as shown by the dashed line in the middle). At the same time, it should be noted that at the production level of the product, it is not necessary to strictly reach a specific value to achieve the ideal angle, but it can have a certain error range, such as 89 degrees, 89.5 degrees, 90 degrees, 90.5 degrees, and so on. The measurement of the angle does not necessarily have to strictly measure the angle between the first wall and the second wall defined in this application, but other walls can be measured, such as the angle between the wall on the profile that plays a major connecting role in the inside and outside directions of the door and window and the outermost wall that has an intersecting relationship. As long as the idea of this scheme is referred to, either the profile is restored to its original state through a shaping step after being deformed by glue injection, or the profile is allowed to have the corresponding margin for subsequent deformation and contraction before glue injection, and then when the insulation glue is cooled and formed after glue injection, the insulation glue drives the profile to deform together and directly deform to the desired shape, so that the final composite injection profile is not deformed and meets the desired requirements, which should be included in the protection scope of this application.
[0034] Next, the glue injection ports are introduced. The positions of the glue injection ports on the glue injection grooves are consistent; the positions of the glue injection ports on adjacent glue injection grooves on the glue injection grooves may also be opposite. Figure 1 , Figure 2 , Figure 3 In the example, according to the orientation shown in the figure, each injection port is facing upward relative to each injection groove, which means that the positions of the injection ports on each injection groove are consistent. The positions of the injection ports on adjacent injection grooves on each injection groove can also be opposite. Figure 1 , Figure 2 , Figure 3 In the example, one injection port faces upwards and the other faces downwards. If there are more injection slots, the other injection ports are also arranged according to the corresponding rules. In fact, there may be no rules at all, and any one injection port can face upwards and any one injection port can face downwards. The scheme of the present application does not have any restrictions on the orientation of each injection port. It’s just that when the orientations are consistent, it is more suitable for simultaneous injection (as described in detail later); when the orientations are opposite or even scattered and disordered, it is not suitable for simultaneous injection. Of course, it is easy to understand that there will be similarities and differences in the orientation of the injection ports only when there are multiple injection slots, and there will be no similarities and differences in the orientation of the injection ports when there is only one injection slot. This article does not make a prior statement, but only simplifies the description. There are similar situations in the following text, which are stated here and will not be repeated in the following text.
[0035] Regarding the injection of glue, in one embodiment, in the step 2, the injection of glue is performed simultaneously in each of the injection grooves. In another embodiment, in the step 2, the injection of glue is performed one by one in sequence in each of the injection grooves. It is easy to understand that simultaneous injection of glue can improve the effectiveness efficiency; however, it should be noted that simultaneous injection of glue will result in a situation where more heat (the heat-insulating glue is in a hot melt state during injection) is concentratedly introduced and dissipated in a short period of time, which is not beneficial to the anti-deformation efforts of the composite injection-glued profile. If the glue is injected one by one, the production efficiency will obviously be slightly lower; but because the heat is introduced and dissipated in small sections at different time periods, it is more beneficial to the anti-deformation efforts of the composite injection-glued profile. However, there is no need to worry that whether it is simultaneous injection of glue or injection of glue one by one, as long as the shaping is performed after injection of glue, or the profile is given a larger angle in advance and then the desired angle is directly formed by cooling and shrinking during injection of glue, the desired composite injection-glued profile can be obtained.
[0036] Regarding bridge cutting, in one embodiment, in step 4, bridges are cut for each of the glue injection grooves simultaneously. In another embodiment, in step 4, bridges are cut for each of the glue injection grooves one by one in sequence. Similarly, cutting bridges simultaneously can improve production efficiency, but stress will be released in a concentrated manner, which is not very beneficial for combating deformation; while cutting bridges one by one will reduce production efficiency, but stress will be gradually released, which is more beneficial for combating deformation; in particular, for each of the glue injection grooves, glue is injected and bridges are cut one by one in sequence, that is, glue is injected and bridges are cut for one glue injection groove first, and then glue is injected and bridges are cut for another glue injection groove, which is more beneficial for combating deformation.
[0037] There is no strict restriction on the order of bridge cutting and plastic surgery. You can either cut the whole body first and then cut the bridge, or cut the bridge first and then plastic surgery.
[0038] Finally, in the case where the second angle is the ideal angle required by the composite injection molding profile, there are also two ways to preset the first angle to be greater than the ideal angle required by the composite injection molding profile. In one embodiment, the profile itself has the first angle when it is manufactured. In another embodiment, the profile itself also has the second angle when it is manufactured. Before performing step 2, the manufacturing method further includes:
[0039] Step five: pre-shaping: pre-shaping the profile to form the first angle between the first wall and the second wall.
[0040] First of all, it should be noted that the serial numbers of the steps in the present application are numbered in the order of description only for the convenience of description, and do not constitute the order of the steps in the manufacturing method of the present application.
[0041] As mentioned above, if the profile is deformed after injection, it can be restored to its original shape through the shaping step. This method can theoretically and practically provide a non-deformed composite injection profile. However, because the shaping step is after the thermal insulation glue is cooled and formed, this will have an adverse effect on the bonding state between the thermal insulation glue and the profile. In particular, the shaping step is to increase the angle, which may cause the thermal insulation glue and the profile to separate at some positions, thus causing the stability and reliability of the composite injection profile to decrease. If this method is named "post-shaping", the technicians of this application have also studied the "pre-shaping" method.
[0042] As for the "pre-shaping" method, first of all, you can consider pre-shaping the profile before injecting glue (because in general, the profiles provided by the profile manufacturer are the ideal angles required in general application scenarios, such as Figure 1 The outer contour shown in the middle rectangular dotted box) makes it have a larger angle (such as Figure 3 The outer contour is shown in the inverted trapezoidal dotted box in the middle), and then the glue is injected. During the cooling and molding process of the thermal insulation glue, the composite injection profile formed during the final molding is the desired ideal shape through the balance relationship between the shrinkage stress generated by the shrinkage of the thermal insulation glue and the anti-deformation force of the profile. Under this scheme, the composite injection profile finally formed is the thermal insulation glue and the profile slowly formed under a natural state by relying on the mutual balance relationship, and its bonding state is no longer affected by external forces. This ensures that the composite injection profile has an ideal angle and the stability and reliability of the composite injection profile. In addition, the profile has undergone two deformations in opposite directions during the manufacturing process, and the stress is basically released. The possibility of adverse effects due to the release of stress in subsequent use is also relatively small.
[0043] The technicians of the present application have further studied that since the profile needs to be pre-shaped to have a larger angle, the profile manufacturing mold can also be adjusted to make the profile itself have a larger angle when it is manufactured (such as Figure 3 This can save the pre-shaping step and improve production efficiency.
[0044] In summary, the beneficial effects of this application are:
[0045] The manufacturing method of the composite injection-molded profile of the present application is to restore the profile to its original shape through a shaping step after the profile is deformed by injection-molding, or to allow the profile to have a corresponding margin for subsequent deformation and shrinkage before injection-molding, so that when the thermal insulation glue is cooled and formed after injection-molding, the thermal insulation glue drives the profile to deform together and directly deform to the desired shape. In this way, it can be ensured that the manufactured composite injection-molded profile does not deform, has an ideal angle, and meets the requirements.
[0046] The technical solutions provided by the embodiments of the present application are introduced in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for technical personnel in this field, according to the idea of the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.
Claims
1. A method for manufacturing a composite injection molding profile, characterized in that: The manufacturing method comprises: Step 1, providing a profile, wherein the profile has a glue injection groove, wherein the glue injection groove has a first wall and a second wall connected to each other, and a first angle is formed between the first wall and the second wall; Step 2: injecting glue, injecting heat-insulating glue into the glue injection groove, cooling the heat-insulating glue to form, and shrinking the heat-insulating glue to drive the profile to deform, so that a second angle is formed between the first wall and the second wall, and the second angle is smaller than the first angle; Among them, the second angle is the ideal angle required by the composite injection-molded profile, the first angle is preset to be greater than the ideal angle required by the composite injection-molded profile, and during the step two, the balance relationship between the shrinkage stress generated by the cooling and molding of the thermal insulation glue and the anti-deformation force of the profile, the second angle formed during the final molding is the ideal angle required by the composite injection-molded profile; or, the first angle is the ideal angle required by the composite injection-molded profile, and the manufacturing method also includes: step three, shaping, shaping the profile to make the profile deform in the opposite direction, so that the first wall and the second wall are restored to the first angle.
2. The method for manufacturing the composite injection molding material according to claim 1, characterized in that: The number of the glue injection grooves is greater than or equal to 1, and each of the glue injection grooves is provided with a glue injection port, and the thermal insulation glue is injected into the glue injection groove from the glue injection port; Each of the glue injection grooves is provided with a temporary bridge at the bottom relative to each of the glue injection ports, and the manufacturing method further includes: step four, cutting the bridge, wherein each of the temporary bridges of the glue injection grooves is cut off after the thermal insulation glue is formed.
3. The method for manufacturing the composite injection molding material according to claim 2, characterized in that: The positions of the glue injection ports on the glue injection grooves are consistent.
4. The method for manufacturing the composite injection molding material according to claim 2, characterized in that: The positions of the glue injection ports on adjacent glue injection grooves are opposite to each other.
5. The method for manufacturing the composite injection molding material according to claim 2, characterized in that: In the step 2, glue is injected into each of the glue injection grooves simultaneously.
6. The method for manufacturing the composite injection molding material according to claim 2, characterized in that: In the step 2, glue is injected into each of the glue injection grooves one by one in sequence.
7. The method for manufacturing the composite injection molding material according to claim 2, characterized in that: In the step 4, the bridges of the glue injection grooves are cut simultaneously.
8. The method for manufacturing the composite injection molding material according to claim 2, characterized in that: In the step 4, the bridges of the glue injection grooves are cut one by one in sequence; or, the glue injection grooves are injected with glue and the bridges are cut one by one in sequence.
9. The method for manufacturing the composite injection molding material according to claim 1, characterized in that: In the case where the second angle is the ideal angle required for the composite injection molding profile, the profile itself has the first angle when it is manufactured.
10. The method for manufacturing the composite injection molding material according to claim 1, characterized in that: In the case where the second angle is the ideal angle required by the composite injection molding profile, the profile itself also has the second angle when it is manufactured. Before performing the step 2, the manufacturing method further includes: Step five: pre-shaping: pre-shaping the profile to form the first angle between the first wall and the second wall.